CT
Learn how CTs work, what they’re used for, and how to install them safely in your systems.
A current transformer converts a high primary current into a smaller, proportional secondary current for safe measurement and protection without disruption.
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A CT works via electromagnetic induction: the primary current creates a magnetic field that induces a proportional current in the secondary winding.
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CTs are usually installed around the conductors of electrical circuits, upstream of metering or protection systems, without interrupting the main circuit.
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